Finding the Fourth Proportional to 59,145.69, 81,601.52 and 39,012.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,145.69 : 81,601.52 = 39,012.60 : x
2. Step 2: Convert to fraction form
   59,145.69/81,601.52 = 39,012.60/x
3. Step 3: Cross multiply
   59,145.69x = 81,601.52 × 39,012.60
4. Step 4: Simplify right side
   59,145.69x = 3,183,487,264.09
5. Step 5: Solve for x
   x = 3,183,487,264.09/59,145.69
6. Step 6: Final answer
   x = 53,824.50